Question

x + x + x = 45
y + y + y = 21
z + z + z = 12
then
z + x * y = ?
I get 109 ?

Answer 1

Answer:

x=15

y=7

z=4

so,

z+x*y = 4+15×7 = 4+105 = 109

Answer 2

Answer:

you first multiply x ×y = 15 × 7=105

then add by z

105+4=109